With its mini size, this submarine is very portable and convenient to carry away, suitable for indoor and outdoor activity. Besides, this boat is a intelligent toy, a perfect gift for children to improving their learning ability. Features: 1. The submarine can move forward, backward, left, right. 2. Simulated design reflect the superior performance of a real submarine. 3. Infrared signals are not disturbed. It is safer to play without power or water. 4. Built-in rechargeable battery can be charged directly by remote controller, convenient to use. 5. Intelligent toys is able to practice children's intelligence quotient and exercise their manual ability. Specification: Item Type: Submarine Toy Material: Plastic, Metal, Electronic Components Frequency: Black 27MHZ/ Green 40MHZ Battery Capacity: 3.7v /100mah li-ion Battery Voltage: 3.7v Battery Charge Time: 15 minutes Remote Control Battery: 4 * 1.5 AA (Not Included) Color: Green, Black (Optional) Size: Approx. 15 * 6.8 * 4.5cm / 5.9 * 2.7 * 1.8in Weight: Approx. 266g / 9.38oz Remote Control Mode: left hand front and back, right hand left and right Remote Control Distance: 5 meters when diving 60-70cm Endurance: 23-25 minutes Channel: 6 Recommended Age: Above 8 Years Old Package list: 1 * Submarine Toy 1 * Remote Control 1 * Instruction 1 * Antenna . Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.